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A capacitor is made with very large plates separated a distance d. The potential between the plates is V=1000 volts and d = 1mm.
a) Calculate the pressure the plates exert on the air between the plates.
b) If the air is replaced by a material of permittivity Xr = 8, what is the
i) Calculate the number of calls/hour/cell and the number of calls/hours/km2 ii) Calculate the number of users/hour/cell and the number of users/hours/channel iii) Find the modulation frequency for this system.
A radio receiver for the HF band covers the frequency range 2 MHz to 30 MHz. The first IF frequency is 3.0 MHz and the local oscillator is above the received signal frequency.
A 75-ohms lossless transmission line is terminated in a load ZL = 80+j60. The line is length lamda/8 long and connected to a line Z0= 50-ohms. What is the input impedance on the 50-ohms line, lamda/8 from the junction
draw a digital design consisting of 2 input AND gates and three inverters, where an inverter is connected to each of the AND gates input and its output. For each of the four possible combinations inputs applied to the two primary inputs.
Instantaneous voltage and current of capacitor, The current flowing through a 5 F capacitor is i=3e^-2t. What is the voltage as a function of time, if the initial voltage is zero?
Interpret manufacturer's data sheet to select appropriate combinational logic devices for specific purposes
What is the reliability, the equivalent MTBF value, and the equivalent failure rate for a system that has a primary microprocessor circuit board and a secondary microprocessor circuit board that is hooked up in standby redundancy
A clever student notices that a high constant loop gain would make the PLL converge in frequency and phase. Rather than use an amplifier with infinite gain the student decides to just use an unstable filter.
An analog signal ranging between 0 and 1 V must be quantized. The midrange quantization errors must be no greater than 0.1V. How many quantization bits must be used to satisfy this requirement
An input signal of 10V at 0o is applied to a parallel RLC circuit with resistor R = 10 , inductive reactance XL = 20 , and a capacitive reactance XC = 10 . All three components are connected in parallel to the source.
Find c > 0 such that the area of the region enclosed by the parabolas y = x^2 - c^2 and y = c^2 -x^2 is 30. c= 6. Find the area of the region bounded by the parabola y = 4 x^2, the tangent line to this parabola at (3, 36) and the x axis.
Efficiency in a power transformer is 98.6% when loaded such that its core losses equal the copper losses. Calculate the per unit resistance of this transformer.
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